667367040400 has 30 divisors (see below), whose sum is σ = 1603349315522. Its totient is φ = 266946816000.

The previous prime is 667367040397. The next prime is 667367040413. The reversal of 667367040400 is 4040763766.

It can be written as a sum of positive squares in 3 ways, for example, as 16498888704 + 650868151696 = 128448^2 + 806764^2 .

It is a super-2 number, since 2×667367040400² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 834208401 + ... + 834209200.

Almost surely, 2^667367040400 is an apocalyptic number.

It is an amenable number.

667367040400 is an abundant number, since it is smaller than the sum of its proper divisors (935982275122).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

667367040400 is a wasteful number, since it uses less digits than its factorization.

667367040400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1668417619 (or 1668417608 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 43.

The spelling of 667367040400 in words is "six hundred sixty-seven billion, three hundred sixty-seven million, forty thousand, four hundred".